Add IT8721F support

only the serial port is tested, keyboard/mouse are gonna
to be tested later, it may also need some more patches
to make it work completely.

Change-Id: Ie9464d01c5d5760ebc800b3cd15a4ab2bad2e09f
Signed-off-by: QingPei Wang <wangqingpei@gmail.com>
Reviewed-on: http://review.coreboot.org/204
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marcj303@gmail.com>

5 files changed, 268 insertions, 0 deletions

diff --git a/src/superio/ite/it8721f/Makefile.inc b/src/superio/ite/it8721f/Makefile.inc
new file mode 100644
index 0000000000..3908237ef1
--- /dev/null
+++ b/src/superio/ite/it8721f/Makefile.inc
@@ -0,0 +1,22 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2011 QingPei Wang <wangqingpei@gmail.com>
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2 of the License, or
+## (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program; if not, write to the Free Software
+## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+##
+
+ramstage-$(CONFIG_SUPERIO_ITE_IT8721F) += superio.c
+
diff --git a/src/superio/ite/it8721f/chip.h b/src/superio/ite/it8721f/chip.h
new file mode 100644
index 0000000000..3717d1967f
--- /dev/null
+++ b/src/superio/ite/it8721f/chip.h
@@ -0,0 +1,34 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011 QingPei Wang <wangqingpei@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#ifndef SUPERIO_ITE_IT8721F_CHIP_H
+#define SUPERIO_ITE_IT8721F_CHIP_H
+
+#include <device/device.h>
+#include <pc80/keyboard.h>
+#include <uart8250.h>
+
+extern struct chip_operations superio_ite_it8721f_ops;
+
+struct superio_ite_it8721f_config {
+	struct pc_keyboard keyboard;
+};
+
+#endif
diff --git a/src/superio/ite/it8721f/early_serial.c b/src/superio/ite/it8721f/early_serial.c
new file mode 100644
index 0000000000..cf17d0e5b9
--- /dev/null
+++ b/src/superio/ite/it8721f/early_serial.c
@@ -0,0 +1,93 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2006 Uwe Hermann <uwe@hermann-uwe.de>
+ * Copyright (C) 2011 QingPei Wang <wangqingpei@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include <arch/romcc_io.h>
+#include "it8721f.h"
+
+/* The base address is 0x2e or 0x4e, depending on config bytes. */
+#define SIO_BASE                     0x2e
+#define SIO_INDEX                    SIO_BASE
+#define SIO_DATA                     (SIO_BASE + 1)
+
+/* Global configuration registers. */
+#define IT8721F_CONFIG_REG_CC        0x02 /* Configure Control (write-only). */
+#define IT8721F_CONFIG_REG_LDN       0x07 /* Logical Device Number. */
+#define IT8721F_CONFIG_REG_CLOCKSEL  0x23 /* Clock Selection. */
+#define IT8721F_CONFIG_REG_SWSUSP    0x24 /* Software Suspend, Flash I/F. */
+
+static void it8721f_sio_write(u8 ldn, u8 index, u8 value)
+{
+	outb(IT8721F_CONFIG_REG_LDN, SIO_BASE);
+	outb(ldn, SIO_DATA);
+	outb(index, SIO_BASE);
+	outb(value, SIO_DATA);
+}
+
+static void it8721f_enter_conf(void)
+{
+	u16 port = 0x2e; /* TODO: Don't hardcode! */
+
+	outb(0x87, port);
+	outb(0x01, port);
+	outb(0x55, port);
+	outb((port == 0x4e) ? 0xaa : 0x55, port);
+}
+
+static void it8721f_exit_conf(void)
+{
+	it8721f_sio_write(0x00, IT8721F_CONFIG_REG_CC, 0x02);
+}
+
+/* Select 24MHz CLKIN (48MHz default). */
+void it8721f_24mhz_clkin(void)
+{
+	it8721f_enter_conf();
+	it8721f_sio_write(0x00, IT8721F_CONFIG_REG_CLOCKSEL, 0x1);
+	it8721f_exit_conf();
+}
+
+
+/* Enable the serial port(s). */
+void it8721f_enable_serial(device_t dev, u16 iobase)
+{
+	/* (1) Enter the configuration state (MB PnP mode). */
+	it8721f_enter_conf();
+
+	/* (2) Modify the data of configuration registers. */
+
+	/*
+	 * Select the chip to configure (if there's more than one).
+	 * Set bit 7 to select JP3=1, clear bit 7 to select JP3=0.
+	 * If this register is not written, both chips are configured.
+	 */
+
+	/* it8718f_sio_write(0x00, IT8718F_CONFIG_REG_CONFIGSEL, 0x00); */
+
+	/* Enable serial port(s). */
+	it8721f_sio_write(IT8721F_SP1, 0x30, 0x1); /* Serial port 1 */
+	it8721f_sio_write(IT8721F_SP2, 0x30, 0x1); /* Serial port 2 */
+
+	/* Clear software suspend mode (clear bit 0). TODO: Needed? */
+	/* it8718f_sio_write(0x00, IT8718F_CONFIG_REG_SWSUSP, 0x00); */
+
+	/* (3) Exit the configuration state (MB PnP mode). */
+	it8721f_exit_conf();
+}
diff --git a/src/superio/ite/it8721f/it8721f.h b/src/superio/ite/it8721f/it8721f.h
new file mode 100644
index 0000000000..2242a2e6c0
--- /dev/null
+++ b/src/superio/ite/it8721f/it8721f.h
@@ -0,0 +1,41 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2006 Uwe Hermann <uwe@hermann-uwe.de>
+ * Copyright (C) 2011 QingPei Wang <wangqingpei@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#ifndef SUPERIO_ITE_IT8721F_IT8721F_H
+#define SUPERIO_ITE_IT8721F_IT8721F_H
+
+#define IT8721F_FDC  0x00 /* Floppy */
+#define IT8721F_SP1  0x01 /* Com1 */
+#define IT8721F_SP2  0x02 /* Com2 */
+#define IT8721F_PP   0x03 /* Parallel port */
+#define IT8721F_EC   0x04 /* Environment controller */
+#define IT8721F_KBCK 0x05 /* PS/2 keyboard */
+#define IT8721F_KBCM 0x06 /* PS/2 mouse */
+#define IT8721F_GPIO 0x07 /* GPIO */
+#define IT8721F_IR   0x0a /* Consumer IR */
+
+#if defined(__PRE_RAM__) && !defined(__ROMCC__)
+void it8721f_24mhz_clkin(void);
+void it8721f_disable_reboot(void);
+void it8721f_enable_serial(device_t dev, u16 iobase);
+#endif
+
+#endif
diff --git a/src/superio/ite/it8721f/superio.c b/src/superio/ite/it8721f/superio.c
new file mode 100644
index 0000000000..846afefea5
--- /dev/null
+++ b/src/superio/ite/it8721f/superio.c
@@ -0,0 +1,78 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2006 Uwe Hermann <uwe@hermann-uwe.de>
+ * Copyright (C) 2011 QingPei Wang <wangqingpei@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include <device/device.h>
+#include <device/pnp.h>
+#include <uart8250.h>
+#include <pc80/keyboard.h>
+#include <stdlib.h>
+#include "chip.h"
+#include "it8721f.h"
+
+static void init(device_t dev)
+{
+	struct superio_ite_it8721f_config *conf = dev->chip_info;
+
+	if (!dev->enabled)
+		return;
+
+	switch (dev->path.pnp.device) {
+	case IT8721F_FDC: /* TODO. */
+		break;
+	case IT8721F_PP: /* TODO. */
+		break;
+	case IT8721F_EC: /* TODO. */
+		break;
+	case IT8721F_KBCK:
+		pc_keyboard_init(&conf->keyboard);
+		break;
+	case IT8721F_KBCM: /* TODO. */
+		break;
+	case IT8721F_IR: /* TODO. */
+		break;
+	}
+}
+
+static struct device_operations ops = {
+	.read_resources   = pnp_read_resources,
+	.set_resources    = pnp_set_resources,
+	.enable_resources = pnp_enable_resources,
+	.enable           = pnp_enable,
+	.init             = init,
+};
+
+/* TODO: FDC, PP, EC, KBCM, IR. */
+static struct pnp_info pnp_dev_info[] = {
+	{ &ops, IT8721F_SP1,  PNP_IO0 | PNP_IRQ0, {0x07f8, 0}, },
+	{ &ops, IT8721F_SP2,  PNP_IO0 | PNP_IRQ0 | PNP_DRQ0 | PNP_DRQ1, {0x07f8, 0}, },
+	{ &ops, IT8721F_KBCK, PNP_IO0 | PNP_IO1 | PNP_IRQ0, {0x07f8, 0}, {0x07f8, 4}, },
+};
+
+static void enable_dev(struct device *dev)
+{
+	pnp_enable_devices(dev, &pnp_ops,
+		ARRAY_SIZE(pnp_dev_info), pnp_dev_info);
+}
+
+struct chip_operations superio_ite_it8721f_ops = {
+	CHIP_NAME("ITE IT8721F Super I/O")
+	.enable_dev = enable_dev,
+};